Decorative extrusion



FIG. 1 is a top plan view of a decorative extrusion showing my new design, the decorative extrusion being of indefinite length;

FIG. 2 is a front elevational view thereof;

FIG. 3 is a right-side elevational view thereof, the left side elevational view being a mirror image thereof; and,

FIG. 4 is a rear elevational view thereof. 

The ornamental design for a decorative extrusion, as shown and described. 